tolyl(redirected from a-tolyl)
Also found in: Medical.
The group C7H7, derived from toluene. Also called cresyl.
1. (Elements & Compounds) (modifier) of, consisting of, or containing any of three isomeric groups, CH3C6H4-, derived from toluene: tolyl group or radical.
2. (Elements & Compounds) (modifier) Also: α-tolyl another word for benzyl
[C19: from tolu (see toluene) + -yl]
any of three univalent groups, C7H7, derived from toluene.
[1865–70; tol (uene) + -yl]